cog psy ch4

attentional neglect

right parietal damage but eyesight is fine, hard time giving attention to left side (RH), ie. clock drawing

agnosia

right parietal damage, problem with perception and object recognition, ie. anchor recognition

associative agnosia

right parietal damage, inability to recognize the meaning/identity of a visually perceived object, ie. anchor recognition

prosopagnosia

right parietal damage, deficit in face recognition, ie. youtube video

amnesia

removal or deterioration of the hippocampus, inability to remember things

H.M. and amnesia

surgery removed much of the hippocampus leading to anterograde amnesia, could rememeber past memories but not make new long term ones

anterograde amnesia

hippocampus, hard to form new memories

retrograde amnesia

hippocampus, old memories are lost

anomia (brain area impacted and behaviors impacted)

frontal, temporal, and sometimes parietal LH damage, can’t find word

acquired dyslexia

LH temporal injury incurred (not developed)

surface dyslexia

LH temporal, impaired irregular world reading, can’t access representation of words they know to follow phonics rules

phonological dyslexia (brain area impacted and behaviors impacted)

LH temporal, impaired nonword reading, can’t access “rule system” for pronouncing new words

alzheimer’s disease

deterioirating hippocampus, severe memory impairment followed by broader cognitive decline

semantic dementia

deteriorating LH and RH temporal, can’t name low frequency words (ie. abacus) or know how to use them, basic facts, defintions, and word finding lost, last-in-first-out (most recently learned things lost first)

structural imaging techniques- MRI

magnetic field aligns H+ atoms, signal emitted disrupts the field and sensors detect atom movements

functional imaging techniques- PET

radioactive glucose is injected, patient does a task and sensors detect where glucose travels

functional imaging techniques- fMRI

magnetic field aligns electrons, blood flow causes disruption in alignment which is detected

electroencephalography (EEG) and electroencephalograms (EEG)

measures electrical activity of neurons adjacent to electrodes

event related potentials (ERP)

averages electric activity in brain over many trials for a specific task